JPS5818982Y2 - Red-use roll positioning device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a device for positioning a raw material in combination with a soybean roll for forming rough areas before forming a die in a forging press process.

Resouse Roll (hereinafter referred to as Roll).

) is the forming of a pre-stamped blank of the same shape from a billet, in which the billet is first held in a predetermined relationship to the roll shape prior to actuation of the resin roll, and then the roll is The billet is bitten and formed by the rotation of the rolls.

In this case, a stopper is used to position the tip of the billet in order to maintain a constant positional relationship between the roll and the billet.

As a stopper mechanism, for example, Japanese Patent Publication No. 46-40094
As described in the above publication, a rotatable arm is connected to the end of the cylinder rod of an air cylinder, and a stopper pin at the end of the arm is inserted between a pair of rolls. After positioning the billet fed in from the opposite side, it retreats from between the rolls, but the billet travels at a speed of 1 m after positioning.
/sec, the stopper pin cannot be retracted in time during the return stroke, and the stopper mechanism is pushed by the billet, which puts undue pressure on the stopper mechanism, which has the disadvantage of easily causing failure. .

Furthermore, in the conventional apparatus, there was a possibility that the position of the billet would shift after the arm of the stopper mechanism was retracted.

SUMMARY OF THE INVENTION An object of the present invention is to eliminate the drawbacks of the prior art by providing a novel positioning device that combines a stopper mechanism and a clamp mechanism.

As shown in FIG. 1, the stopper mechanism 1 included in the present invention has one end of an L-shaped bell crank 13 pivotally attached to the tip of a piston rod 12 of an air cylinder 11, and the other end of the bell crank 13. The stopper pin 14 is pivotally held in the
The stopper pin 14 is held horizontally together with another swingable link 15, and the stopper pin 14 is moved in parallel by the drive of the cylinder 11, so that the roll 3
It is configured to reciprocate between a positioning position and a retracted position, and is disposed on the exit side of the reuse roll 3.

More specifically, the stopper mechanism 1 includes a pair of bell cranks that are movable in the front-rear direction of the line about their respective pivot points and are arranged side by side at a distance in the front-rear direction of the line. 13 and link 15,
A stopper pin 14 is pivotally supported by each of these swinging ends and extends in the front-rear direction of the line, and this stopper pin 14 is configured such that the tip of the stopper pin 14 faces between the reso-use rolls 3. An air cylinder serves as a driving device for swinging the bell crank 13 so as to reciprocate between the positioning position where the bell crank 13 is in a closed state and the retracted position where the bell crank 13 is moved upward and downstream from the positioning position. 11.

In the present invention, a clamp mechanism 2 that operates in conjunction with the stopper mechanism 1 is provided on the entry side of the roll 3.

As shown in FIG. 2, this clamping mechanism 2 is configured so that a pair of left and right flat plate-shaped clampers 21 are brought closer and separated by the operation of a cylinder 22, and a billet is held in the center space of the pair of clampers 21. The connection fulcrum 24a of the opening/closing link 24 is slidably pivoted to the groove 23a provided at the tip of the vertical rod 23 which is raised and lowered by the cylinder 22 (see Fig. 4), and one of each opening/closing link is One side is pivotally connected to a fixed part, and a clamper 21 is pivotally attached to the other side, and the moving direction of the clamper 21 is regulated by a horizontally arranged guide rod 25,
As the cylinder 22 moves up and down, it moves horizontally, and the left and right clampers 21 move symmetrically to approach and separate.

The clamping force of the clamper 21 is normally about 50 kg, but can be adjusted as appropriate by the pressure of the cylinder 22 and the amount of deflection of the return spring 26 stretched outside the guide rod 25.

The clamp mechanism 2 is installed at the tip of the roll side of the roller conveyor 4 that feeds the billet to the roll 3, and is moved up and down with respect to the roll along with the roller conveyor 4 by operating a lifting mechanism 41 that adjusts the height of the roller conveyor 4. The direction position can be adjusted.

A limit switch 51 is provided on the billet transport path by the roller conveyor 4 to detect the passage of the billet 7 and instruct the clamp mechanism 2 to operate.
Another limit switch 52 is provided on the conveying path of the conveying slat conveyor 6 disposed on the exit side of the rolls to detect the passage of the material after forming, so as to issue a command to place the stopper mechanism 2 at a position. It's Nishide.

The operation of the device of the present invention will be explained below.

First, the billet 7 is conveyed on the roller conveyor 4,
The tip position of the billet is determined by a stopper mechanism 1 in which a stopper pin is installed between rollers in advance.

Prior to this, when the billet 7 in the middle of being conveyed is detected to have passed a predetermined position by the nomit switch 51, this detection signal is sent to the cylinder 22 of the clamping mechanism via a timer (not shown). is activated to clamp the billet 7 thus positioned.

Immediately upon completion of clamping, the stopper is commanded to retreat, and the stopper pin 14 is retreated from the positioning position by driving the clamp 11.

At this time, a stop command is also issued to the roller conveyor 4.

When the retraction of the stopper pin 14 is completed, an operation command is issued to the roll 3 and the slat conveyor 6, and the billet 7 is rolled by the roll 3 while being clamped by the clamp mechanism 2.

Since the rolling force by the rolls 3 is stronger than the clamping force by the clampers 21, the billet 7 is gradually pulled out from between the clampers 21.

When rolling of the roll 3 is completed, a brake is applied to the roll to stop it, and at the same time, the clamp mechanism 2 receives a signal to return to its original position and waits for the next billet.

The rolled material is conveyed on a slat conveyor 6,
When the predetermined position is reached and passage is detected by the limit switch 52, the stopper mechanism 1 is operated again for positioning by this detection signal, and the stopper pin 14 is projected to the position between the rolls.

Thereafter, similar operations are repeated and linked.

According to the positioning device of the present invention, the tip of the stopper pin retracts faster than the stopper mechanism of conventional devices, and therefore there is less possibility of being pushed by the material to be rolled and applying unreasonable pressure to the stopper mechanism. Therefore, the life of the equipment can be extended for a long time, and there is no fear that the position of the rolled material will shift due to the operation of the clamp mechanism.

Further, since the pair of clampers of the clamping mechanism can move symmetrically toward each other from the left and right sides of the line, they have a centripetal property, and therefore the material to be rolled is always regulated at the center of the rolls.

As described above, according to the present invention, the shape and dimensional accuracy of the rough ground can be improved, and the stamping yield can be improved.

[Brief explanation of the drawing]

FIG. 1 is a side view showing the overall configuration of the positioning device of the present invention. FIG. 2 is a front view of the clamp mechanism section taken along line II-II in FIG. 1. FIG. 3 is a front view of the stopper mechanism section seen from line II-III in FIG. Figure 4 is a partial view of the clamper. 1: Stopper mechanism, 11 Niji cylinder, 12: Piston
Rod, 13: Bell crank, 14: Stopper pin, 15: Link, 2: Clamp mechanism, 21: Clamper 2
2 Nijilinda, 23: Vertical cut, 24: Opening/closing link,
25 guide rod, 26: return spring, 3: reuse roll, 4: roller conveyor, 6: slat
Conveyor, 7: Billet, 51, 52: Limit switch.

Claims (1)

[Claims for Utility Model Registration] A stopper mechanism provided on the exit side of a pair of reuse rolls in order to position the tip of a rolled material that enters between the rolls, the stopper mechanism is a stopper mechanism provided on the exit side of a pair of reuse rolls that moves the line around the respective pivot points. a pair of link members that are swingable in the front-rear direction and are arranged side by side with a gap between them in the front-rear direction of the line;
a stopper pin extending in the front-rear direction of the line pivotally supported by each swinging end of the link member; a stopper mechanism including a drive device for swinging the link member so as to reciprocate between a positioning position in which the link member is in the position and a retracted position in which the link member is moved upward and downstream from the position; A clamping mechanism for clamping a rolled material positioned by a stopper mechanism, the clamping mechanism including a pair of clampers movable symmetrically in directions approaching each other from the left and right sides of the line; a signal system that instructs the drive device to retract the stopper pin to the retracted position after completing the clamping of the material; and a signal system that instructs the operation of the reso-use roll after the retracting of the stopper pin is completed. Reuse roll positioning device with